Ответ: 17/28.
Объяснение:
9/14 + (х- 3/7) = 23/28;
x-3/7=23/28-9/14;
x-3/7=23/28-18/28;
x-3/7=5/28;
x=5/28+3/7;
x=5/28+12/28;
x=17/28.
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Ответ: 17/28.
Объяснение:
9/14 + (х- 3/7) = 23/28;
x-3/7=23/28-9/14;
x-3/7=23/28-18/28;
x-3/7=5/28;
x=5/28+3/7;
x=5/28+12/28;
x=17/28.